212550730 has 24 divisors (see below), whose sum is σ = 445056228. Its totient is φ = 72874368.

The previous prime is 212550713. The next prime is 212550731. The reversal of 212550730 is 37055212.

It can be written as a sum of positive squares in 2 ways, for example, as 190357209 + 22193521 = 13797^2 + 4711^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212550695 and 212550704.

It is not an unprimeable number, because it can be changed into a prime (212550731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216399 + ... + 217378.

Almost surely, 2^212550730 is an apocalyptic number.

212550730 is an abundant number, since it is smaller than the sum of its proper divisors (232505498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212550730 is a wasteful number, since it uses less digits than its factorization.

212550730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433798 (or 433791 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 212550730 is about 14579.1196579217. The cubic root of 212550730 is about 596.7890787754.

The spelling of 212550730 in words is "two hundred twelve million, five hundred fifty thousand, seven hundred thirty".